fix(explorer): live custom-prop metadata in detail panel, list-view delete

- CustomProps sidebar read a snapshot of file.metadata, so props added or
  removed from list-view cells never appeared in the open detail panel.
  Prefer the live fileManager list entry and include custom_props in the
  memo deps.
- Sync panel-initiated patches back into the fm list via fileUpdated so
  both views stay consistent.
- Add a hover Dismiss button on custom-prop list cells that removes the
  prop via patchCustomProp(remove: true), honoring read-only state.

Closes Dvorinka/cloudreve#94 (upstream cloudreve/cloudreve#3321).

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

frontend/src/component/FileManager/Explorer/ListView/Cell.tsx

@@ -1,4 +1,4 @@
-import { Box, Fade, Grow, InputBase, PopoverProps, Tooltip, Typography, useMediaQuery, useTheme } from "@mui/material";
+import { Box, Fade, Grow, IconButton, InputBase, PopoverProps, Tooltip, Typography, useMediaQuery, useTheme } from "@mui/material";
 import React, { memo, useCallback, useContext, useEffect, useMemo, useState } from "react";
 import { sizeToString } from "../../../../util";
 import CrUri, { SearchParam } from "../../../../util/uri.ts";
@@ -21,6 +21,7 @@ import { loadFileThumb, patchCustomProp } from "../../../../redux/thunks/file.ts
 import AutoHeight from "../../../Common/AutoHeight.tsx";
 import { NoWrapBox } from "../../../Common/StyledComponents.tsx";
 import TimeBadge from "../../../Common/TimeBadge.tsx";
+import Dismiss from "../../../Icons/Dismiss.tsx";
 import Info from "../../../Icons/Info.tsx";
 import { DisplayOption } from "../../ContextMenu/useActionDisplayOpt.ts";
 import FileBadge from "../../FileBadge.tsx";
@@ -392,6 +393,7 @@ const CustomPropsCell = memo(({ file, customProp, readOnly }: CustomPropsCellPro
   const dispatch = useAppDispatch();
   const fmIndex = useContext(FmIndexContext);
   const [loading, setLoading] = useState(false);
+  const [mouseOver, setMouseOver] = useState(false);
 
   const stopPropagation = useCallback((e: React.SyntheticEvent) => {
     e.stopPropagation();
@@ -407,6 +409,18 @@ const CustomPropsCell = memo(({ file, customProp, readOnly }: CustomPropsCellPro
     [dispatch, fmIndex, file, customProp.id],
   );
 
+  const onDelete = useCallback(
+    (e: React.MouseEvent) => {
+      e.stopPropagation();
+      if (loading || readOnly) return;
+      setLoading(true);
+      dispatch(patchCustomProp(fmIndex, file, customProp.id, "", true)).finally(() => {
+        setLoading(false);
+      });
+    },
+    [dispatch, fmIndex, file, customProp.id, loading, readOnly],
+  );
+
   return (
     <Box
       onClick={stopPropagation}
@@ -414,9 +428,18 @@ const CustomPropsCell = memo(({ file, customProp, readOnly }: CustomPropsCellPro
       onMouseDown={stopPropagation}
       onMouseMove={stopPropagation}
       onDragStart={stopPropagation}
-      sx={{ width: "100%" }}
+      onMouseEnter={() => setMouseOver(true)}
+      onMouseLeave={() => setMouseOver(false)}
+      sx={{ width: "100%", display: "flex", alignItems: "center" }}
     >
-      {getPropsContent(customProp, onChange, loading, readOnly)}
+      <Box sx={{ flex: 1, minWidth: 0 }}>{getPropsContent(customProp, onChange, loading, readOnly)}</Box>
+      {!readOnly && (
+        <Grow in={mouseOver} unmountOnExit>
+          <IconButton size="small" onClick={onDelete} disabled={loading}>
+            <Dismiss fontSize="small" />
+          </IconButton>
+        </Grow>
+      )}
     </Box>
   );
 });

frontend/src/component/FileManager/Sidebar/CustomProps/CustomProps.tsx

@@ -5,6 +5,8 @@ import { TransitionGroup } from "react-transition-group";
 import { sendMetadataPatch } from "../../../../api/api.ts";
 import { CustomProps as CustomPropsType, FileResponse } from "../../../../api/explorer.ts";
 import { useAppDispatch, useAppSelector } from "../../../../redux/hooks.ts";
+import { fileUpdated } from "../../../../redux/fileManagerSlice.ts";
+import { FileManagerIndex } from "../../FileManager.tsx";
 import { DisplayOption } from "../../ContextMenu/useActionDisplayOpt.ts";
 import AddButton from "./AddButton.tsx";
 import CustomPropsCard from "./CustomPropsItem.tsx";
@@ -28,22 +30,28 @@ const CustomProps = ({ file, setTarget, targetDisplayOptions }: CustomPropsProps
   const [loading, setLoading] = useState(false);
   const dispatch = useAppDispatch();
   const custom_props = useAppSelector((state) => state.siteConfig.explorer?.config?.custom_props);
+  // `file` is a snapshot taken when the sidebar opened; prefer live metadata
+  // from the file list so props patched from list view appear immediately.
+  const liveMetadata = useAppSelector(
+    (state) => state.fileManager[FileManagerIndex.main]?.list?.files.find((f) => f.path === file.path)?.metadata,
+  );
+  const metadata = liveMetadata ?? file.metadata;
 
   const existingProps = useMemo(() => {
-    if (!file.metadata) {
+    if (!metadata) {
       return [];
     }
-    return Object.keys(file.metadata)
+    return Object.keys(metadata)
       .filter((key) => key.startsWith(customPropsMetadataPrefix))
       .map((key) => {
         const propId = key.slice(customPropsMetadataPrefix.length);
         return {
           id: propId,
           props: custom_props?.find((prop) => prop.id === propId),
-          value: file.metadata?.[key] ?? "",
+          value: metadata?.[key] ?? "",
         } as CustomPropsItem;
       });
-  }, [file.metadata]);
+  }, [metadata, custom_props]);
 
   const existingPropIds = useMemo(() => {
     return existingProps?.map((prop) => prop.id) ?? [];
@@ -62,21 +70,22 @@ const CustomProps = ({ file, setTarget, targetDisplayOptions }: CustomPropsProps
       }),
     )
       .then(() => {
-        if (remove) {
-          const newMetadata = { ...file.metadata };
-          props.forEach((prop) => {
+        const newMetadata = { ...metadata };
+        props.forEach((prop) => {
+          if (remove) {
             delete newMetadata[customPropsMetadataPrefix + prop.id];
-          });
-          setTarget({ ...file, metadata: newMetadata });
-        } else {
-          setTarget({
-            ...file,
-            metadata: {
-              ...file.metadata,
-              ...Object.assign({}, ...props.map((prop) => ({ [customPropsMetadataPrefix + prop.id]: prop.value }))),
-            },
-          });
-        }
+          } else {
+            newMetadata[customPropsMetadataPrefix + prop.id] = prop.value;
+          }
+        });
+        const updated = { ...file, metadata: newMetadata };
+        setTarget(updated);
+        dispatch(
+          fileUpdated({
+            index: FileManagerIndex.main,
+            value: [{ file: updated, oldPath: file.path, includeMetadata: true }],
+          }),
+        );
       })
       .finally(() => {
         setLoading(false);